Andy
Don’t think anyone has answered yet. If you lift the carpet on the shelf behind the seats (move both back rests forward to do this makes life easier) then the wood panel should have a pair of turn flaps at the front, use hole to insert finger like an old phone and swing forward then the panel should lift from the front edge first as it tucks under the rear.
You should find your plastic tray and tools. If the wood panel is screwed down you may well find that there is no tool tray, I have heard some late car owners say their cars came without The tray, others say they had one, it’s a Morgan after all.
Happy and safe miles to you and yours
Colin
